Short-term Borrowings and Long-term Debt - Schedule of Significant Debt Repayments (Details) € in Millions, ¥ in Millions, $ in Millions	12 Months Ended
	Jan. 31, 2024 USD ($)	Jan. 31, 2023 USD ($)	Jun. 26, 2023 USD ($)	Apr. 11, 2023 USD ($)	Dec. 15, 2022 USD ($)	Jul. 15, 2022 JPY (¥)	Apr. 08, 2022 EUR (€)
Debt Instrument [Line Items]
Significant repayments of long-term debt	$ 4,030	$ 2,689
2.550% Debt, Due 2023 | Unsecured debt
Debt Instrument [Line Items]
Principal Amount				$ 1,750
Interest Rate				2.55%
Significant repayments of long-term debt	1,750
3.400% Debt, Due 2023 | Unsecured debt
Debt Instrument [Line Items]
Principal Amount			$ 2,280
Interest Rate			3.40%
Significant repayments of long-term debt	$ 2,280
1.900% Debt, Due 2022 | Unsecured debt
Debt Instrument [Line Items]
Principal Amount | €							€ 850
Interest Rate							1.90%
Significant repayments of long-term debt		927
0.183% Debt, Due 2022 | Unsecured debt
Debt Instrument [Line Items]
Principal Amount | ¥						¥ 70,000
Interest Rate						0.183%
Significant repayments of long-term debt		512
2.350% Debt, Due 2022 | Unsecured debt
Debt Instrument [Line Items]
Principal Amount					$ 1,250
Interest Rate					2.35%
Significant repayments of long-term debt		$ 1,250